<!DOCTYPE html>
<html>
    <head lang="en">
        <meta charset="UTF-8">
        <title>

        </title>

    </head>
    <body>
        <form di="testform" >
            <input type="submit" name="s1" value="v1" formtarget="_blank" formaction="http://www.w3school.com.cn/js/index.asp">提交
            <input type="submit" name="s2" value="v2" formtarget="_self" formaction="http://www.w3school.com.cn/js/index.asp">提交
            <input type="submit" name="s3" value="v3" formtarget="_；parent" formaction="http://www.w3school.com.cn/js/index.asp">提交
            <input type="submit" name="s4" value="v4" formtarget="_top" formaction="http://www.w3school.com.cn/js/index.asp">提交
            <input type="submit" name="s5" value="v5" formtarget="_blank" formaction="http://www.w3school.com.cn/js/index.asp">提交
            <input type="submit" name="s6" value="v6" formtarget="framename" formaction="http://www.w3school.com.cn/js/index.asp">提交
    </body>
</html>